/*  Prototype JavaScript framework, version 1.5.0_rc1
 *  (c) 2005 Sam Stephenson <sam@conio.net>
*/

var Prototype={
Version:'1.5.0_rc1',
ScriptFragment:'(?:<script.*?>)((\n|\r|.)*?)(?:<\/script>)',
emptyFunction:function(){},
K:function(x){return x}
}
var Class={
create:function(){
return function(){
this.initialize.apply(this,arguments);
}
}
}
var Abstract=new Object();
Object.extend=function(destination,source){
for(var property in source){
destination[property]=source[property];
}
return destination;
}
Object.extend(Object,{
inspect:function(object){
try{
if(object==undefined)return'undefined';
if(object==null)return'null';
return object.inspect?object.inspect():object.toString();
}catch(e){
if(e instanceof RangeError)return'...';
throw e;
}
},
keys:function(object){
var keys=[];
for(var property in object)
keys.push(property);
return keys;
},
values:function(object){
var values=[];
for(var property in object)
values.push(object[property]);
return values;
},
clone:function(object){
return Object.extend({},object);
}
});
Function.prototype.bind=function(){
var __method=this,args=$A(arguments),object=args.shift();
return function(){
return __method.apply(object,args.concat($A(arguments)));
}
}
Function.prototype.bindAsEventListener=function(object){
var __method=this,args=$A(arguments),object=args.shift();
return function(event){
return __method.apply(object,[(event||window.event)].concat(args).concat($A(arguments)));
}
}
Object.extend(Number.prototype,{
toColorPart:function(){
var digits=this.toString(16);
if(this<16)return'0'+digits;
return digits;
},
succ:function(){
return this+1;
},
times:function(iterator){
$R(0,this,true).each(iterator);
return this;
}
});
var Try={
these:function(){
var returnValue;
for(var i=0;i<arguments.length;i++){
var lambda=arguments[i];
try{
returnValue=lambda();
break;
}catch(e){}
}
return returnValue;
}
}
var PeriodicalExecuter=Class.create();
PeriodicalExecuter.prototype={
initialize:function(callback,frequency){
this.callback=callback;
this.frequency=frequency;
this.currentlyExecuting=false;
this.registerCallback();
},
registerCallback:function(){
this.timer=setInterval(this.onTimerEvent.bind(this),this.frequency*1000);
},
stop:function(){
if(!this.timer)return;
clearInterval(this.timer);
this.timer=null;
},
onTimerEvent:function(){
if(!this.currentlyExecuting){
try{
this.currentlyExecuting=true;
this.callback(this);
}finally{
this.currentlyExecuting=false;
}
}
}
}
Object.extend(String.prototype,{
gsub:function(pattern,replacement){
var result='',source=this,match;
replacement=arguments.callee.prepareReplacement(replacement);
while(source.length>0){
if(match=source.match(pattern)){
result+=source.slice(0,match.index);
result+=(replacement(match)||'').toString();
source=source.slice(match.index+match[0].length);
}else{
result+=source,source='';
}
}
return result;
},
sub:function(pattern,replacement,count){
replacement=this.gsub.prepareReplacement(replacement);
count=count===undefined?1:count;
return this.gsub(pattern,function(match){
if(--count<0)return match[0];
return replacement(match);
});
},
scan:function(pattern,iterator){
this.gsub(pattern,iterator);
return this;
},
truncate:function(length,truncation){
length=length||30;
truncation=truncation===undefined?'...':truncation;
return this.length>length?
this.slice(0,length-truncation.length)+truncation:this;
},
strip:function(){
return this.replace(/^\s+/,'').replace(/\s+$/,'');
},
stripTags:function(){
return this.replace(/<\/?[^>]+>/gi,'');
},
stripScripts:function(){
return this.replace(new RegExp(Prototype.ScriptFragment,'img'),'');
},
extractScripts:function(){
var matchAll=new RegExp(Prototype.ScriptFragment,'img');
var matchOne=new RegExp(Prototype.ScriptFragment,'im');
return(this.match(matchAll)||[]).map(function(scriptTag){
return(scriptTag.match(matchOne)||['',''])[1];
});
},
evalScripts:function(){
return this.extractScripts().map(function(script){return eval(script)});
},
escapeHTML:function(){
var div=document.createElement('div');
var text=document.createTextNode(this);
div.appendChild(text);
return div.innerHTML;
},
unescapeHTML:function(){
var div=document.createElement('div');
div.innerHTML=this.stripTags();
return div.childNodes[0]?div.childNodes[0].nodeValue:'';
},
toQueryParams:function(){
var pairs=this.match(/^\??(.*)$/)[1].split('&');
return pairs.inject({},function(params,pairString){
var pair=pairString.split('=');
var value=pair[1]?decodeURIComponent(pair[1]):undefined;
params[decodeURIComponent(pair[0])]=value;
return params;
});
},
toArray:function(){
return this.split('');
},
camelize:function(){
var oStringList=this.split('-');
if(oStringList.length==1)return oStringList[0];
var camelizedString=this.indexOf('-')==0
?oStringList[0].charAt(0).toUpperCase()+oStringList[0].substring(1)
:oStringList[0];
for(var i=1,len=oStringList.length;i<len;i++){
var s=oStringList[i];
camelizedString+=s.charAt(0).toUpperCase()+s.substring(1);
}
return camelizedString;
},
inspect:function(useDoubleQuotes){
var escapedString=this.replace(/\\/g,'\\\\');
if(useDoubleQuotes)
return'"'+escapedString.replace(/"/g,'\\"')+'"';
else
return"'"+escapedString.replace(/'/g,'\\\'')+"'";
}
});
String.prototype.gsub.prepareReplacement=function(replacement){
if(typeof replacement=='function')return replacement;
var template=new Template(replacement);
return function(match){return template.evaluate(match)};
}
String.prototype.parseQuery=String.prototype.toQueryParams;
var Template=Class.create();
Template.Pattern=/(^|.|\r|\n)(#\{(.*?)\})/;
Template.prototype={
initialize:function(template,pattern){
this.template=template.toString();
this.pattern=pattern||Template.Pattern;
},
evaluate:function(object){
return this.template.gsub(this.pattern,function(match){
var before=match[1];
if(before=='\\')return match[2];
return before+(object[match[3]]||'').toString();
});
}
}
var $break=new Object();
var $continue=new Object();
var Enumerable={
each:function(iterator){
var index=0;
try{
this._each(function(value){
try{
iterator(value,index++);
}catch(e){
if(e!=$continue)throw e;
}
});
}catch(e){
if(e!=$break)throw e;
}
},
all:function(iterator){
var result=true;
this.each(function(value,index){
result=result&&!!(iterator||Prototype.K)(value,index);
if(!result)throw $break;
});
return result;
},
any:function(iterator){
var result=false;
this.each(function(value,index){
if(result=!!(iterator||Prototype.K)(value,index))
throw $break;
});
return result;
},
collect:function(iterator){
var results=[];
this.each(function(value,index){
results.push(iterator(value,index));
});
return results;
},
detect:function(iterator){
var result;
this.each(function(value,index){
if(iterator(value,index)){
result=value;
throw $break;
}
});
return result;
},
findAll:function(iterator){
var results=[];
this.each(function(value,index){
if(iterator(value,index))
results.push(value);
});
return results;
},
grep:function(pattern,iterator){
var results=[];
this.each(function(value,index){
var stringValue=value.toString();
if(stringValue.match(pattern))
results.push((iterator||Prototype.K)(value,index));
})
return results;
},
include:function(object){
var found=false;
this.each(function(value){
if(value==object){
found=true;
throw $break;
}
});
return found;
},
inject:function(memo,iterator){
this.each(function(value,index){
memo=iterator(memo,value,index);
});
return memo;
},
invoke:function(method){
var args=$A(arguments).slice(1);
return this.collect(function(value){
return value[method].apply(value,args);
});
},
max:function(iterator){
var result;
this.each(function(value,index){
value=(iterator||Prototype.K)(value,index);
if(result==undefined||value>=result)
result=value;
});
return result;
},
min:function(iterator){
var result;
this.each(function(value,index){
value=(iterator||Prototype.K)(value,index);
if(result==undefined||value<result)
result=value;
});
return result;
},
partition:function(iterator){
var trues=[],falses=[];
this.each(function(value,index){
((iterator||Prototype.K)(value,index)?
trues:falses).push(value);
});
return[trues,falses];
},
pluck:function(property){
var results=[];
this.each(function(value,index){
results.push(value[property]);
});
return results;
},
reject:function(iterator){
var results=[];
this.each(function(value,index){
if(!iterator(value,index))
results.push(value);
});
return results;
},
sortBy:function(iterator){
return this.collect(function(value,index){
return{value:value,criteria:iterator(value,index)};
}).sort(function(left,right){
var a=left.criteria,b=right.criteria;
return a<b?-1:a>b?1:0;
}).pluck('value');
},
toArray:function(){
return this.collect(Prototype.K);
},
zip:function(){
var iterator=Prototype.K,args=$A(arguments);
if(typeof args.last()=='function')
iterator=args.pop();
var collections=[this].concat(args).map($A);
return this.map(function(value,index){
return iterator(collections.pluck(index));
});
},
inspect:function(){
return'#<Enumerable:'+this.toArray().inspect()+'>';
}
}
Object.extend(Enumerable,{
map:Enumerable.collect,
find:Enumerable.detect,
select:Enumerable.findAll,
member:Enumerable.include,
entries:Enumerable.toArray
});
var $A=Array.from=function(iterable){
if(!iterable)return[];
if(iterable.toArray){
return iterable.toArray();
}else{
var results=[];
for(var i=0;i<iterable.length;i++)
results.push(iterable[i]);
return results;
}
}
Object.extend(Array.prototype,Enumerable);
if(!Array.prototype._reverse)
Array.prototype._reverse=Array.prototype.reverse;
Object.extend(Array.prototype,{
_each:function(iterator){
for(var i=0;i<this.length;i++)
iterator(this[i]);
},
clear:function(){
this.length=0;
return this;
},
first:function(){
return this[0];
},
last:function(){
return this[this.length-1];
},
compact:function(){
return this.select(function(value){
return value!=undefined||value!=null;
});
},
flatten:function(){
return this.inject([],function(array,value){
return array.concat(value&&value.constructor==Array?
value.flatten():[value]);
});
},
without:function(){
var values=$A(arguments);
return this.select(function(value){
return!values.include(value);
});
},
indexOf:function(object){
for(var i=0;i<this.length;i++)
if(this[i]==object)return i;
return-1;
},
reverse:function(inline){
return(inline!==false?this:this.toArray())._reverse();
},
reduce:function(){
return this.length>1?this:this[0];
},
uniq:function(){
return this.inject([],function(array,value){
return array.include(value)?array:array.concat([value]);
});
},
inspect:function(){
return'['+this.map(Object.inspect).join(', ')+']';
}
});
var Hash={
_each:function(iterator){
for(var key in this){
var value=this[key];
if(typeof value=='function')continue;
var pair=[key,value];
pair.key=key;
pair.value=value;
iterator(pair);
}
},
keys:function(){
return this.pluck('key');
},
values:function(){
return this.pluck('value');
},
merge:function(hash){
return $H(hash).inject($H(this),function(mergedHash,pair){
mergedHash[pair.key]=pair.value;
return mergedHash;
});
},
toQueryString:function(){
return this.map(function(pair){
return pair.map(encodeURIComponent).join('=');
}).join('&');
},
inspect:function(){
return'#<Hash:{'+this.map(function(pair){
return pair.map(Object.inspect).join(': ');
}).join(', ')+'}>';
}
}
function $H(object){
var hash=Object.extend({},object||{});
Object.extend(hash,Enumerable);
Object.extend(hash,Hash);
return hash;
}
ObjectRange=Class.create();
Object.extend(ObjectRange.prototype,Enumerable);
Object.extend(ObjectRange.prototype,{
initialize:function(start,end,exclusive){
this.start=start;
this.end=end;
this.exclusive=exclusive;
},
_each:function(iterator){
var value=this.start;
while(this.include(value)){
iterator(value);
value=value.succ();
}
},
include:function(value){
if(value<this.start)
return false;
if(this.exclusive)
return value<this.end;
return value<=this.end;
}
});
var $R=function(start,end,exclusive){
return new ObjectRange(start,end,exclusive);
}
var Ajaxp={
getTransport:function(){
return Try.these(
function(){return new XMLHttpRequest()},
function(){return new ActiveXObject('Msxml2.XMLHTTP')},
function(){return new ActiveXObject('Microsoft.XMLHTTP')}
)||false;
},
activeRequestCount:0
}
Ajaxp.Responders={
responders:[],
_each:function(iterator){
this.responders._each(iterator);
},
register:function(responderToAdd){
if(!this.include(responderToAdd))
this.responders.push(responderToAdd);
},
unregister:function(responderToRemove){
this.responders=this.responders.without(responderToRemove);
},
dispatch:function(callback,request,transport,json){
this.each(function(responder){
if(responder[callback]&&typeof responder[callback]=='function'){
try{
responder[callback].apply(responder,[request,transport,json]);
}catch(e){}
}
});
}
};
Object.extend(Ajaxp.Responders,Enumerable);
Ajaxp.Responders.register({
onCreate:function(){
Ajaxp.activeRequestCount++;
},
onComplete:function(){
Ajaxp.activeRequestCount--;
}
});
Ajaxp.Base=function(){};
Ajaxp.Base.prototype={
setOptions:function(options){
this.options={
method:'post',
asynchronous:true,
contentType:'application/x-www-form-urlencoded',
parameters:''
}
Object.extend(this.options,options||{});
},
responseIsSuccess:function(){
return this.transport.status==undefined
||this.transport.status==0
||(this.transport.status>=200&&this.transport.status<300);
},
responseIsFailure:function(){
return!this.responseIsSuccess();
}
}
Ajaxp.Request=Class.create();
Ajaxp.Request.Events=
['Uninitialized','Loading','Loaded','Interactive','Complete'];
Ajaxp.Request.prototype=Object.extend(new Ajaxp.Base(),{
initialize:function(url,options){
this.transport=Ajaxp.getTransport();
this.setOptions(options);
this.request(url);
},
request:function(url){
var parameters=this.options.parameters||'';
if(parameters.length>0)parameters+='&_=';
if(this.options.method!='get'&&this.options.method!='post'){
parameters+=(parameters.length>0?'&':'')+'_method='+this.options.method;
this.options.method='post';
}
try{
this.url=url;
if(this.options.method=='get'&&parameters.length>0)
this.url+=(this.url.match(/\?/)?'&':'?')+parameters;
Ajaxp.Responders.dispatch('onCreate',this,this.transport);
this.transport.open(this.options.method,this.url,
this.options.asynchronous);
if(this.options.asynchronous)
setTimeout(function(){this.respondToReadyState(1)}.bind(this),10);
this.transport.onreadystatechange=this.onStateChange.bind(this);
this.setRequestHeaders();
var body=this.options.postBody?this.options.postBody:parameters;
this.transport.send(this.options.method=='post'?body:null);
if(!this.options.asynchronous&&this.transport.overrideMimeType)
this.onStateChange();
}catch(e){
this.dispatchException(e);
}
},
setRequestHeaders:function(){
var requestHeaders=
['X-Requested-With','XMLHttpRequest',
'X-Prototype-Version',Prototype.Version,
'Accept','text/javascript, text/html, application/xml, text/xml, */*'];
if(this.options.method=='post'){
requestHeaders.push('Content-type',this.options.contentType);
if(this.transport.overrideMimeType)
requestHeaders.push('Connection','close');
}
if(this.options.requestHeaders)
requestHeaders.push.apply(requestHeaders,this.options.requestHeaders);
for(var i=0;i<requestHeaders.length;i+=2)
this.transport.setRequestHeader(requestHeaders[i],requestHeaders[i+1]);
},
onStateChange:function(){
var readyState=this.transport.readyState;
if(readyState!=1)
this.respondToReadyState(this.transport.readyState);
},
header:function(name){
try{
return this.transport.getResponseHeader(name);
}catch(e){}
},
evalJSON:function(){
try{
return eval('('+this.header('X-JSON')+')');
}catch(e){}
},
evalResponse:function(){
try{
return eval(this.transport.responseText);
}catch(e){
this.dispatchException(e);
}
},
respondToReadyState:function(readyState){
var event=Ajaxp.Request.Events[readyState];
var transport=this.transport,json=this.evalJSON();
if(event=='Complete'){
try{
(this.options['on'+this.transport.status]
||this.options['on'+(this.responseIsSuccess()?'Success':'Failure')]
||Prototype.emptyFunction)(transport,json);
}catch(e){
this.dispatchException(e);
}
if((this.header('Content-type')||'').match(/^text\/javascript/i))
this.evalResponse();
}
try{
(this.options['on'+event]||Prototype.emptyFunction)(transport,json);
Ajaxp.Responders.dispatch('on'+event,this,transport,json);
}catch(e){
this.dispatchException(e);
}
if(event=='Complete')
this.transport.onreadystatechange=Prototype.emptyFunction;
},
dispatchException:function(exception){
(this.options.onException||Prototype.emptyFunction)(this,exception);
Ajaxp.Responders.dispatch('onException',this,exception);
}
});
Ajaxp.Updater=Class.create();
Object.extend(Object.extend(Ajaxp.Updater.prototype,Ajaxp.Request.prototype),{
initialize:function(container,url,options){
this.containers={
success:container.success?$(container.success):$(container),
failure:container.failure?$(container.failure):
(container.success?null:$(container))
}
this.transport=Ajaxp.getTransport();
this.setOptions(options);
var onComplete=this.options.onComplete||Prototype.emptyFunction;
this.options.onComplete=(function(transport,object){
this.updateContent();
onComplete(transport,object);
}).bind(this);
this.request(url);
},
updateContent:function(){
var receiver=this.responseIsSuccess()?
this.containers.success:this.containers.failure;
var response=this.transport.responseText;
if(!this.options.evalScripts)
response=response.stripScripts();
if(receiver){
if(this.options.insertion){
new this.options.insertion(receiver,response);
}else{
Element.update(receiver,response);
}
}
if(this.responseIsSuccess()){
if(this.onComplete)
setTimeout(this.onComplete.bind(this),10);
}
}
});
Ajaxp.PeriodicalUpdater=Class.create();
Ajaxp.PeriodicalUpdater.prototype=Object.extend(new Ajaxp.Base(),{
initialize:function(container,url,options){
this.setOptions(options);
this.onComplete=this.options.onComplete;
this.frequency=(this.options.frequency||2);
this.decay=(this.options.decay||1);
this.updater={};
this.container=container;
this.url=url;
this.start();
},
start:function(){
this.options.onComplete=this.updateComplete.bind(this);
this.onTimerEvent();
},
stop:function(){
this.updater.options.onComplete=undefined;
clearTimeout(this.timer);
(this.onComplete||Prototype.emptyFunction).apply(this,arguments);
},
updateComplete:function(request){
if(this.options.decay){
this.decay=(request.responseText==this.lastText?
this.decay*this.options.decay:1);
this.lastText=request.responseText;
}
this.timer=setTimeout(this.onTimerEvent.bind(this),
this.decay*this.frequency*1000);
},
onTimerEvent:function(){
this.updater=new Ajaxp.Updater(this.container,this.url,this.options);
}
});
function $(){
var results=[],element;
for(var i=0;i<arguments.length;i++){
element=arguments[i];
if(typeof element=='string')
element=document.getElementById(element);
results.push(Element.extend(element));
}
return results.reduce();
}
document.getElementsByClassName=function(className,parentElement){
var children=($(parentElement)||document.body).getElementsByTagName('*');
return $A(children).inject([],function(elements,child){
if(child.className.match(new RegExp("(^|\\s)"+className+"(\\s|$)")))
elements.push(Element.extend(child));
return elements;
});
}
if(!window.Element)
var Element=new Object();
Element.extend=function(element){
if(!element)return;
if(_nativeExtensions||element.nodeType==3)return element;
if(!element._extended&&element.tagName&&element!=window){
var methods=Object.clone(Element.Methods),cache=Element.extend.cache;
if(element.tagName=='FORM')
Object.extend(methods,Form.Methods);
if(['INPUT','TEXTAREA','SELECT'].include(element.tagName))
Object.extend(methods,Form.Element.Methods);
for(var property in methods){
var value=methods[property];
if(typeof value=='function')
element[property]=cache.findOrStore(value);
}
}
element._extended=true;
return element;
}
Element.extend.cache={
findOrStore:function(value){
return this[value]=this[value]||function(){
return value.apply(null,[this].concat($A(arguments)));
}
}
}
Element.Methods={
visible:function(element){
return $(element).style.display!='none';
},
toggle:function(element){
element=$(element);
Element[Element.visible(element)?'hide':'show'](element);
return element;
},
hide:function(element){
$(element).style.display='none';
return element;
},
show:function(element){
$(element).style.display='';
return element;
},
remove:function(element){
element=$(element);
element.parentNode.removeChild(element);
return element;
},
update:function(element,html){
$(element).innerHTML=html.stripScripts();
setTimeout(function(){html.evalScripts()},10);
return element;
},
replace:function(element,html){
element=$(element);
if(element.outerHTML){
element.outerHTML=html.stripScripts();
}else{
var range=element.ownerDocument.createRange();
range.selectNodeContents(element);
element.parentNode.replaceChild(
range.createContextualFragment(html.stripScripts()),element);
}
setTimeout(function(){html.evalScripts()},10);
return element;
},
inspect:function(element){
element=$(element);
var result='<'+element.tagName.toLowerCase();
$H({'id':'id','className':'class'}).each(function(pair){
var property=pair.first(),attribute=pair.last();
var value=(element[property]||'').toString();
if(value)result+=' '+attribute+'='+value.inspect(true);
});
return result+'>';
},
recursivelyCollect:function(element,property){
element=$(element);
var elements=[];
while(element=element[property])
if(element.nodeType==1)
elements.push(Element.extend(element));
return elements;
},
ancestors:function(element){
return $(element).recursivelyCollect('parentNode');
},
descendants:function(element){
element=$(element);
return $A(element.getElementsByTagName('*'));
},
previousSiblings:function(element){
return $(element).recursivelyCollect('previousSibling');
},
nextSiblings:function(element){
return $(element).recursivelyCollect('nextSibling');
},
siblings:function(element){
element=$(element);
return element.previousSiblings().reverse().concat(element.nextSiblings());
},
match:function(element,selector){
element=$(element);
if(typeof selector=='string')
selector=new Selector(selector);
return selector.match(element);
},
up:function(element,expression,index){
return Selector.findElement($(element).ancestors(),expression,index);
},
down:function(element,expression,index){
return Selector.findElement($(element).descendants(),expression,index);
},
previous:function(element,expression,index){
return Selector.findElement($(element).previousSiblings(),expression,index);
},
next:function(element,expression,index){
return Selector.findElement($(element).nextSiblings(),expression,index);
},
getElementsBySelector:function(){
var args=$A(arguments),element=$(args.shift());
return Selector.findChildElements(element,args);
},
getElementsByClassName:function(element,className){
element=$(element);
return document.getElementsByClassName(className,element);
},
getHeight:function(element){
element=$(element);
return element.offsetHeight;
},
classNames:function(element){
return new Element.ClassNames(element);
},
hasClassName:function(element,className){
if(!(element=$(element)))return;
return Element.classNames(element).include(className);
},
addClassName:function(element,className){
if(!(element=$(element)))return;
Element.classNames(element).add(className);
return element;
},
removeClassName:function(element,className){
if(!(element=$(element)))return;
Element.classNames(element).remove(className);
return element;
},
observe:function(){
Event.observe.apply(Event,arguments);
return $A(arguments).first();
},
stopObserving:function(){
Event.stopObserving.apply(Event,arguments);
return $A(arguments).first();
},
cleanWhitespace:function(element){
element=$(element);
var node=element.firstChild;
while(node){
var nextNode=node.nextSibling;
if(node.nodeType==3&&!/\S/.test(node.nodeValue))
element.removeChild(node);
node=nextNode;
}
return element;
},
empty:function(element){
return $(element).innerHTML.match(/^\s*$/);
},
childOf:function(element,ancestor){
element=$(element),ancestor=$(ancestor);
while(element=element.parentNode)
if(element==ancestor)return true;
return false;
},
scrollTo:function(element){
element=$(element);
var x=element.x?element.x:element.offsetLeft,
y=element.y?element.y:element.offsetTop;
window.scrollTo(x,y);
return element;
},
getStyle:function(element,style){
element=$(element);
var value=element.style[style.camelize()];
if(!value){
if(document.defaultView&&document.defaultView.getComputedStyle){
var css=document.defaultView.getComputedStyle(element,null);
value=css?css.getPropertyValue(style):null;
}else if(element.currentStyle){
value=element.currentStyle[style.camelize()];
}
}
if(window.opera&&['left','top','right','bottom'].include(style))
if(Element.getStyle(element,'position')=='static')value='auto';
return value=='auto'?null:value;
},
setStyle:function(element,style){
element=$(element);
for(var name in style)
element.style[name.camelize()]=style[name];
return element;
},
getDimensions:function(element){
element=$(element);
if(Element.getStyle(element,'display')!='none')
return{width:element.offsetWidth,height:element.offsetHeight};
var els=element.style;
var originalVisibility=els.visibility;
var originalPosition=els.position;
els.visibility='hidden';
els.position='absolute';
els.display='';
var originalWidth=element.clientWidth;
var originalHeight=element.clientHeight;
els.display='none';
els.position=originalPosition;
els.visibility=originalVisibility;
return{width:originalWidth,height:originalHeight};
},
makePositioned:function(element){
element=$(element);
var pos=Element.getStyle(element,'position');
if(pos=='static'||!pos){
element._madePositioned=true;
element.style.position='relative';
if(window.opera){
element.style.top=0;
element.style.left=0;
}
}
return element;
},
undoPositioned:function(element){
element=$(element);
if(element._madePositioned){
element._madePositioned=undefined;
element.style.position=
element.style.top=
element.style.left=
element.style.bottom=
element.style.right='';
}
return element;
},
makeClipping:function(element){
element=$(element);
if(element._overflow)return;
element._overflow=element.style.overflow||'auto';
if((Element.getStyle(element,'overflow')||'visible')!='hidden')
element.style.overflow='hidden';
return element;
},
undoClipping:function(element){
element=$(element);
if(!element._overflow)return;
element.style.overflow=element._overflow=='auto'?'':element._overflow;
element._overflow=null;
return element;
}
}
if(document.all){
Element.Methods.update=function(element,html){
element=$(element);
var tagName=element.tagName.toUpperCase();
if(['THEAD','TBODY','TR','TD'].indexOf(tagName)>-1){
var div=document.createElement('div');
switch(tagName){
case'THEAD':
case'TBODY':
div.innerHTML='<table><tbody>'+html.stripScripts()+'</tbody></table>';
depth=2;
break;
case'TR':
div.innerHTML='<table><tbody><tr>'+html.stripScripts()+'</tr></tbody></table>';
depth=3;
break;
case'TD':
div.innerHTML='<table><tbody><tr><td>'+html.stripScripts()+'</td></tr></tbody></table>';
depth=4;
}
$A(element.childNodes).each(function(node){
element.removeChild(node)
});
depth.times(function(){div=div.firstChild});
$A(div.childNodes).each(
function(node){element.appendChild(node)});
}else{
element.innerHTML=html.stripScripts();
}
setTimeout(function(){html.evalScripts()},10);
return element;
}
}
Object.extend(Element,Element.Methods);
var _nativeExtensions=false;
if(!window.HTMLElement&&/Konqueror|Safari|KHTML/.test(navigator.userAgent)){
['','Form','Input','TextArea','Select'].each(function(tag){
var klass=window['HTML'+tag+'Element']={};
klass.prototype=document.createElement(tag?tag.toLowerCase():'div').__proto__;
});
}
Element.addMethods=function(methods){
Object.extend(Element.Methods,methods||{});
function copy(methods,destination){
var cache=Element.extend.cache;
for(var property in methods){
var value=methods[property];
destination[property]=cache.findOrStore(value);
}
}
if(typeof HTMLElement!='undefined'){
copy(Element.Methods,HTMLElement.prototype);
copy(Form.Methods,HTMLFormElement.prototype);
[HTMLInputElement,HTMLTextAreaElement,HTMLSelectElement].each(function(klass){
copy(Form.Element.Methods,klass.prototype);
});
_nativeExtensions=true;
}
}
var Toggle=new Object();
Toggle.display=Element.toggle;
Abstract.Insertion=function(adjacency){
this.adjacency=adjacency;
}
Abstract.Insertion.prototype={
initialize:function(element,content){
this.element=$(element);
this.content=content.stripScripts();
if(this.adjacency&&this.element.insertAdjacentHTML){
try{
this.element.insertAdjacentHTML(this.adjacency,this.content);
}catch(e){
var tagName=this.element.tagName.toLowerCase();
if(tagName=='tbody'||tagName=='tr'){
this.insertContent(this.contentFromAnonymousTable());
}else{
throw e;
}
}
}else{
this.range=this.element.ownerDocument.createRange();
if(this.initializeRange)this.initializeRange();
this.insertContent([this.range.createContextualFragment(this.content)]);
}
setTimeout(function(){content.evalScripts()},10);
},
contentFromAnonymousTable:function(){
var div=document.createElement('div');
div.innerHTML='<table><tbody>'+this.content+'</tbody></table>';
return $A(div.childNodes[0].childNodes[0].childNodes);
}
}
var Insertion=new Object();
Insertion.Before=Class.create();
Insertion.Before.prototype=Object.extend(new Abstract.Insertion('beforeBegin'),{
initializeRange:function(){
this.range.setStartBefore(this.element);
},
insertContent:function(fragments){
fragments.each((function(fragment){
this.element.parentNode.insertBefore(fragment,this.element);
}).bind(this));
}
});
Insertion.Top=Class.create();
Insertion.Top.prototype=Object.extend(new Abstract.Insertion('afterBegin'),{
initializeRange:function(){
this.range.selectNodeContents(this.element);
this.range.collapse(true);
},
insertContent:function(fragments){
fragments.reverse(false).each((function(fragment){
this.element.insertBefore(fragment,this.element.firstChild);
}).bind(this));
}
});
Insertion.Bottom=Class.create();
Insertion.Bottom.prototype=Object.extend(new Abstract.Insertion('beforeEnd'),{
initializeRange:function(){
this.range.selectNodeContents(this.element);
this.range.collapse(this.element);
},
insertContent:function(fragments){
fragments.each((function(fragment){
this.element.appendChild(fragment);
}).bind(this));
}
});
Insertion.After=Class.create();
Insertion.After.prototype=Object.extend(new Abstract.Insertion('afterEnd'),{
initializeRange:function(){
this.range.setStartAfter(this.element);
},
insertContent:function(fragments){
fragments.each((function(fragment){
this.element.parentNode.insertBefore(fragment,
this.element.nextSibling);
}).bind(this));
}
});
Element.ClassNames=Class.create();
Element.ClassNames.prototype={
initialize:function(element){
this.element=$(element);
},
_each:function(iterator){
this.element.className.split(/\s+/).select(function(name){
return name.length>0;
})._each(iterator);
},
set:function(className){
this.element.className=className;
},
add:function(classNameToAdd){
if(this.include(classNameToAdd))return;
this.set(this.toArray().concat(classNameToAdd).join(' '));
},
remove:function(classNameToRemove){
if(!this.include(classNameToRemove))return;
this.set(this.select(function(className){
return className!=classNameToRemove;
}).join(' '));
},
toString:function(){
return this.toArray().join(' ');
}
}
Object.extend(Element.ClassNames.prototype,Enumerable);
var Selector=Class.create();
Selector.prototype={
initialize:function(expression){
this.params={classNames:[]};
this.expression=expression.toString().strip();
this.parseExpression();
this.compileMatcher();
},
parseExpression:function(){
function abort(message){throw'Parse error in selector: '+message;}
if(this.expression=='')abort('empty expression');
var params=this.params,expr=this.expression,match,modifier,clause,rest;
while(match=expr.match(/^(.*)\[([a-z0-9_:-]+?)(?:([~\|!]?=)(?:"([^"]*)"|([^\]\s]*)))?\]$/i)){
params.attributes=params.attributes||[];
params.attributes.push({name:match[2],operator:match[3],value:match[4]||match[5]||''});
expr=match[1];
}
if(expr=='*')return this.params.wildcard=true;
while(match=expr.match(/^([^a-z0-9_-])?([a-z0-9_-]+)(.*)/i)){
modifier=match[1],clause=match[2],rest=match[3];
switch(modifier){
case'#':params.id=clause;break;
case'.':params.classNames.push(clause);break;
case'':
case undefined:params.tagName=clause.toUpperCase();break;
default:abort(expr.inspect());
}
expr=rest;
}
if(expr.length>0)abort(expr.inspect());
},
buildMatchExpression:function(){
var params=this.params,conditions=[],clause;
if(params.wildcard)
conditions.push('true');
if(clause=params.id)
conditions.push('element.id == '+clause.inspect());
if(clause=params.tagName)
conditions.push('element.tagName.toUpperCase() == '+clause.inspect());
if((clause=params.classNames).length>0)
for(var i=0;i<clause.length;i++)
conditions.push('Element.hasClassName(element, '+clause[i].inspect()+')');
if(clause=params.attributes){
clause.each(function(attribute){
var value='element.getAttribute('+attribute.name.inspect()+')';
var splitValueBy=function(delimiter){
return value+' && '+value+'.split('+delimiter.inspect()+')';
}
switch(attribute.operator){
case'=':conditions.push(value+' == '+attribute.value.inspect());break;
case'~=':conditions.push(splitValueBy(' ')+'.include('+attribute.value.inspect()+')');break;
case'|=':conditions.push(
splitValueBy('-')+'.first().toUpperCase() == '+attribute.value.toUpperCase().inspect()
);break;
case'!=':conditions.push(value+' != '+attribute.value.inspect());break;
case'':
case undefined:conditions.push(value+' != null');break;
default:throw'Unknown operator '+attribute.operator+' in selector';
}
});
}
return conditions.join(' && ');
},
compileMatcher:function(){
this.match=new Function('element','if (!element.tagName) return false; \
      return '+this.buildMatchExpression());
},
findElements:function(scope){
var element;
if(element=$(this.params.id))
if(this.match(element))
if(!scope||Element.childOf(element,scope))
return[element];
scope=(scope||document).getElementsByTagName(this.params.tagName||'*');
var results=[];
for(var i=0;i<scope.length;i++)
if(this.match(element=scope[i]))
results.push(Element.extend(element));
return results;
},
toString:function(){
return this.expression;
}
}
Object.extend(Selector,{
matchElements:function(elements,expression){
var selector=new Selector(expression);
return elements.select(selector.match.bind(selector));
},
findElement:function(elements,expression,index){
if(typeof expression=='number')index=expression,expression=false;
return Selector.matchElements(elements,expression||'*')[index||0];
},
findChildElements:function(element,expressions){
return expressions.map(function(expression){
return expression.strip().split(/\s+/).inject([null],function(results,expr){
var selector=new Selector(expr);
return results.inject([],function(elements,result){
return elements.concat(selector.findElements(result||element));
});
});
}).flatten();
}
});
function $$(){
return Selector.findChildElements(document,$A(arguments));
}
var Form={
reset:function(form){
$(form).reset();
return form;
}
};
Form.Methods={
serialize:function(form){
var elements=Form.getElements($(form));
var queryComponents=new Array();
for(var i=0;i<elements.length;i++){
var queryComponent=Form.Element.serialize(elements[i]);
if(queryComponent)
queryComponents.push(queryComponent);
}
return queryComponents.join('&');
},
getElements:function(form){
form=$(form);
var elements=new Array();
for(var tagName in Form.Element.Serializers){
var tagElements=form.getElementsByTagName(tagName);
for(var j=0;j<tagElements.length;j++)
elements.push(tagElements[j]);
}
return elements;
},
getInputs:function(form,typeName,name){
form=$(form);
var inputs=form.getElementsByTagName('input');
if(!typeName&&!name)
return inputs;
var matchingInputs=new Array();
for(var i=0;i<inputs.length;i++){
var input=inputs[i];
if((typeName&&input.type!=typeName)||
(name&&input.name!=name))
continue;
matchingInputs.push(input);
}
return matchingInputs;
},
disable:function(form){
form=$(form);
var elements=Form.getElements(form);
for(var i=0;i<elements.length;i++){
var element=elements[i];
element.blur();
element.disabled='true';
}
return form;
},
enable:function(form){
form=$(form);
var elements=Form.getElements(form);
for(var i=0;i<elements.length;i++){
var element=elements[i];
element.disabled='';
}
return form;
},
findFirstElement:function(form){
return Form.getElements(form).find(function(element){
return element.type!='hidden'&&!element.disabled&&
['input','select','textarea'].include(element.tagName.toLowerCase());
});
},
focusFirstElement:function(form){
form=$(form);
Field.activate(Form.findFirstElement(form));
return form;
}
}
Object.extend(Form,Form.Methods);
Form.Element={
focus:function(element){
$(element).focus();
return element;
},
select:function(element){
$(element).select();
return element;
}
}
Form.Element.Methods={
serialize:function(element){
element=$(element);
var method=element.tagName.toLowerCase();
var parameter=Form.Element.Serializers[method](element);
if(parameter){
var key=encodeURIComponent(parameter[0]);
if(key.length==0)return;
if(parameter[1].constructor!=Array)
parameter[1]=[parameter[1]];
return parameter[1].map(function(value){
return key+'='+encodeURIComponent(value);
}).join('&');
}
},
getValue:function(element){
element=$(element);
var method=element.tagName.toLowerCase();
var parameter=Form.Element.Serializers[method](element);
if(parameter)
return parameter[1];
},
clear:function(element){
$(element).value='';
return element;
},
present:function(element){
return $(element).value!='';
},
activate:function(element){
element=$(element);
element.focus();
if(element.select)
element.select();
return element;
},
disable:function(element){
element=$(element);
element.disabled='';
return element;
},
enable:function(element){
element=$(element);
element.blur();
element.disabled='true';
return element;
}
}
Object.extend(Form.Element,Form.Element.Methods);
var Field=Form.Element;
Form.Element.Serializers={
input:function(element){
switch(element.type.toLowerCase()){
case'checkbox':
case'radio':
return Form.Element.Serializers.inputSelector(element);
default:
return Form.Element.Serializers.textarea(element);
}
return false;
},
inputSelector:function(element){
if(element.checked)
return[element.name,element.value];
},
textarea:function(element){
return[element.name,element.value];
},
select:function(element){
return Form.Element.Serializers[element.type=='select-one'?
'selectOne':'selectMany'](element);
},
selectOne:function(element){
var value='',opt,index=element.selectedIndex;
if(index>=0){
opt=element.options[index];
value=opt.value||opt.text;
}
return[element.name,value];
},
selectMany:function(element){
var value=[];
for(var i=0;i<element.length;i++){
var opt=element.options[i];
if(opt.selected)
value.push(opt.value||opt.text);
}
return[element.name,value];
}
}
var $F=Form.Element.getValue;
Abstract.TimedObserver=function(){}
Abstract.TimedObserver.prototype={
initialize:function(element,frequency,callback){
this.frequency=frequency;
this.element=$(element);
this.callback=callback;
this.lastValue=this.getValue();
this.registerCallback();
},
registerCallback:function(){
setInterval(this.onTimerEvent.bind(this),this.frequency*1000);
},
onTimerEvent:function(){
var value=this.getValue();
if(this.lastValue!=value){
this.callback(this.element,value);
this.lastValue=value;
}
}
}
Form.Element.Observer=Class.create();
Form.Element.Observer.prototype=Object.extend(new Abstract.TimedObserver(),{
getValue:function(){
return Form.Element.getValue(this.element);
}
});
Form.Observer=Class.create();
Form.Observer.prototype=Object.extend(new Abstract.TimedObserver(),{
getValue:function(){
return Form.serialize(this.element);
}
});
Abstract.EventObserver=function(){}
Abstract.EventObserver.prototype={
initialize:function(element,callback){
this.element=$(element);
this.callback=callback;
this.lastValue=this.getValue();
if(this.element.tagName.toLowerCase()=='form')
this.registerFormCallbacks();
else
this.registerCallback(this.element);
},
onElementEvent:function(){
var value=this.getValue();
if(this.lastValue!=value){
this.callback(this.element,value);
this.lastValue=value;
}
},
registerFormCallbacks:function(){
var elements=Form.getElements(this.element);
for(var i=0;i<elements.length;i++)
this.registerCallback(elements[i]);
},
registerCallback:function(element){
if(element.type){
switch(element.type.toLowerCase()){
case'checkbox':
case'radio':
Event.observe(element,'click',this.onElementEvent.bind(this));
break;
default:
Event.observe(element,'change',this.onElementEvent.bind(this));
break;
}
}
}
}
Form.Element.EventObserver=Class.create();
Form.Element.EventObserver.prototype=Object.extend(new Abstract.EventObserver(),{
getValue:function(){
return Form.Element.getValue(this.element);
}
});
Form.EventObserver=Class.create();
Form.EventObserver.prototype=Object.extend(new Abstract.EventObserver(),{
getValue:function(){
return Form.serialize(this.element);
}
});
if(!window.Event){
var Event=new Object();
}
Object.extend(Event,{
KEY_BACKSPACE:8,
KEY_TAB:9,
KEY_RETURN:13,
KEY_ESC:27,
KEY_LEFT:37,
KEY_UP:38,
KEY_RIGHT:39,
KEY_DOWN:40,
KEY_DELETE:46,
KEY_HOME:36,
KEY_END:35,
KEY_PAGEUP:33,
KEY_PAGEDOWN:34,
element:function(event){
return event.target||event.srcElement;
},
isLeftClick:function(event){
return(((event.which)&&(event.which==1))||
((event.button)&&(event.button==1)));
},
pointerX:function(event){
return event.pageX||(event.clientX+
(document.documentElement.scrollLeft||document.body.scrollLeft));
},
pointerY:function(event){
return event.pageY||(event.clientY+
(document.documentElement.scrollTop||document.body.scrollTop));
},
stop:function(event){
if(event.preventDefault){
event.preventDefault();
event.stopPropagation();
}else{
event.returnValue=false;
event.cancelBubble=true;
}
},
findElement:function(event,tagName){
var element=Event.element(event);
while(element.parentNode&&(!element.tagName||
(element.tagName.toUpperCase()!=tagName.toUpperCase())))
element=element.parentNode;
return element;
},
observers:false,
_observeAndCache:function(element,name,observer,useCapture){
if(!this.observers)this.observers=[];
if(element.addEventListener){
this.observers.push([element,name,observer,useCapture]);
element.addEventListener(name,observer,useCapture);
}else if(element.attachEvent){
this.observers.push([element,name,observer,useCapture]);
element.attachEvent('on'+name,observer);
}
},
unloadCache:function(){
if(!Event.observers)return;
for(var i=0;i<Event.observers.length;i++){
Event.stopObserving.apply(this,Event.observers[i]);
Event.observers[i][0]=null;
}
Event.observers=false;
},
observe:function(element,name,observer,useCapture){
element=$(element);
useCapture=useCapture||false;
if(name=='keypress'&&
(navigator.appVersion.match(/Konqueror|Safari|KHTML/)
||element.attachEvent))
name='keydown';
Event._observeAndCache(element,name,observer,useCapture);
},
stopObserving:function(element,name,observer,useCapture){
element=$(element);
useCapture=useCapture||false;
if(name=='keypress'&&
(navigator.appVersion.match(/Konqueror|Safari|KHTML/)
||element.detachEvent))
name='keydown';
if(element.removeEventListener){
element.removeEventListener(name,observer,useCapture);
}else if(element.detachEvent){
try{
element.detachEvent('on'+name,observer);
}catch(e){}
}
}
});
if(navigator.appVersion.match(/\bMSIE\b/))
Event.observe(window,'unload',Event.unloadCache,false);
var Position={
includeScrollOffsets:false,
prepare:function(){
this.deltaX=window.pageXOffset
||document.documentElement.scrollLeft
||document.body.scrollLeft
||0;
this.deltaY=window.pageYOffset
||document.documentElement.scrollTop
||document.body.scrollTop
||0;
},
realOffset:function(element){
var valueT=0,valueL=0;
do{
valueT+=element.scrollTop||0;
valueL+=element.scrollLeft||0;
element=element.parentNode;
}while(element);
return[valueL,valueT];
},
cumulativeOffset:function(element){
var valueT=0,valueL=0;
do{
valueT+=element.offsetTop||0;
valueL+=element.offsetLeft||0;
element=element.offsetParent;
}while(element);
return[valueL,valueT];
},
positionedOffset:function(element){
var valueT=0,valueL=0;
do{
valueT+=element.offsetTop||0;
valueL+=element.offsetLeft||0;
element=element.offsetParent;
if(element){
p=Element.getStyle(element,'position');
if(p=='relative'||p=='absolute')break;
}
}while(element);
return[valueL,valueT];
},
offsetParent:function(element){
if(element.offsetParent)return element.offsetParent;
if(element==document.body)return element;
while((element=element.parentNode)&&element!=document.body)
if(Element.getStyle(element,'position')!='static')
return element;
return document.body;
},
within:function(element,x,y){
if(this.includeScrollOffsets)
return this.withinIncludingScrolloffsets(element,x,y);
this.xcomp=x;
this.ycomp=y;
this.offset=this.cumulativeOffset(element);
return(y>=this.offset[1]&&
y<this.offset[1]+element.offsetHeight&&
x>=this.offset[0]&&
x<this.offset[0]+element.offsetWidth);
},
withinIncludingScrolloffsets:function(element,x,y){
var offsetcache=this.realOffset(element);
this.xcomp=x+offsetcache[0]-this.deltaX;
this.ycomp=y+offsetcache[1]-this.deltaY;
this.offset=this.cumulativeOffset(element);
return(this.ycomp>=this.offset[1]&&
this.ycomp<this.offset[1]+element.offsetHeight&&
this.xcomp>=this.offset[0]&&
this.xcomp<this.offset[0]+element.offsetWidth);
},
overlap:function(mode,element){
if(!mode)return 0;
if(mode=='vertical')
return((this.offset[1]+element.offsetHeight)-this.ycomp)/
element.offsetHeight;
if(mode=='horizontal')
return((this.offset[0]+element.offsetWidth)-this.xcomp)/
element.offsetWidth;
},
page:function(forElement){
var valueT=0,valueL=0;
var element=forElement;
do{
valueT+=element.offsetTop||0;
valueL+=element.offsetLeft||0;
if(element.offsetParent==document.body)
if(Element.getStyle(element,'position')=='absolute')break;
}while(element=element.offsetParent);
element=forElement;
do{
if(!window.opera||element.tagName=='BODY'){
valueT-=element.scrollTop||0;
valueL-=element.scrollLeft||0;
}
}while(element=element.parentNode);
return[valueL,valueT];
},
clone:function(source,target){
var options=Object.extend({
setLeft:true,
setTop:true,
setWidth:true,
setHeight:true,
offsetTop:0,
offsetLeft:0
},arguments[2]||{})
source=$(source);
var p=Position.page(source);
target=$(target);
var delta=[0,0];
var parent=null;
if(Element.getStyle(target,'position')=='absolute'){
parent=Position.offsetParent(target);
delta=Position.page(parent);
}
if(parent==document.body){
delta[0]-=document.body.offsetLeft;
delta[1]-=document.body.offsetTop;
}
if(options.setLeft)target.style.left=(p[0]-delta[0]+options.offsetLeft)+'px';
if(options.setTop)target.style.top=(p[1]-delta[1]+options.offsetTop)+'px';
if(options.setWidth)target.style.width=source.offsetWidth+'px';
if(options.setHeight)target.style.height=source.offsetHeight+'px';
},
absolutize:function(element){
element=$(element);
if(element.style.position=='absolute')return;
Position.prepare();
var offsets=Position.positionedOffset(element);
var top=offsets[1];
var left=offsets[0];
var width=element.clientWidth;
var height=element.clientHeight;
element._originalLeft=left-parseFloat(element.style.left||0);
element._originalTop=top-parseFloat(element.style.top||0);
element._originalWidth=element.style.width;
element._originalHeight=element.style.height;
element.style.position='absolute';
element.style.top=top+'px';;
element.style.left=left+'px';;
element.style.width=width+'px';;
element.style.height=height+'px';;
},
relativize:function(element){
element=$(element);
if(element.style.position=='relative')return;
Position.prepare();
element.style.position='relative';
var top=parseFloat(element.style.top||0)-(element._originalTop||0);
var left=parseFloat(element.style.left||0)-(element._originalLeft||0);
element.style.top=top+'px';
element.style.left=left+'px';
element.style.height=element._originalHeight;
element.style.width=element._originalWidth;
}
}
if(/Konqueror|Safari|KHTML/.test(navigator.userAgent)){
Position.cumulativeOffset=function(element){
var valueT=0,valueL=0;
do{
valueT+=element.offsetTop||0;
valueL+=element.offsetLeft||0;
if(element.offsetParent==document.body)
if(Element.getStyle(element,'position')=='absolute')break;
element=element.offsetParent;
}while(element);
return[valueL,valueT];
}
}
Element.addMethods();